Definition: a swimming pool, especially one that is indoors.
I’ve always loved seeing pictures of them. Those beautiful, classy photos depicting the million-dollar interior of mansions whose owners had the money and the creativity (or the money to hire creativity) to integrate a water space into their rooms. It must be so calming, to wake up to the crystalline blue with the sunlight captured in it, filtering through. And the cool surface of the glass when you lean against it and exhale, like the coldness will slowly seep into your skin exchanging places with your body heat, bringing you the calm that you need. Natatorium. An aquarium, but for humans, and inside the most intimate corners of most human habitat.